java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:18:42,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:18:42,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:18:42,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:18:42,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:18:42,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:18:42,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:18:42,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:18:43,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:18:43,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:18:43,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:18:43,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:18:43,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:18:43,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:18:43,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:18:43,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:18:43,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:18:43,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:18:43,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:18:43,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:18:43,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:18:43,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:18:43,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:18:43,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:18:43,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:18:43,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:18:43,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:18:43,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:18:43,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:18:43,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:18:43,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:18:43,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:18:43,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:18:43,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:18:43,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:18:43,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:18:43,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:18:43,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:18:43,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:18:43,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:18:43,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:18:43,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:18:43,081 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:18:43,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:18:43,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:18:43,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:18:43,083 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:18:43,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:18:43,084 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:18:43,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:18:43,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:18:43,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:18:43,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:18:43,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:18:43,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:18:43,086 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:18:43,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:18:43,086 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:18:43,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:18:43,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:18:43,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:18:43,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:18:43,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:18:43,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:18:43,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:18:43,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:18:43,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:18:43,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:18:43,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:18:43,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:18:43,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:18:43,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:18:43,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:18:43,361 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:18:43,362 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:18:43,363 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:18:43,363 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c [2019-10-14 23:18:43,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b691b71/548bccfa8b474f72a0c91bebb87b20e6/FLAGe3db174de [2019-10-14 23:18:44,079 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:18:44,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c [2019-10-14 23:18:44,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b691b71/548bccfa8b474f72a0c91bebb87b20e6/FLAGe3db174de [2019-10-14 23:18:44,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29b691b71/548bccfa8b474f72a0c91bebb87b20e6 [2019-10-14 23:18:44,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:18:44,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:18:44,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:18:44,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:18:44,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:18:44,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:44" (1/1) ... [2019-10-14 23:18:44,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@225cf470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:44, skipping insertion in model container [2019-10-14 23:18:44,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:18:44" (1/1) ... [2019-10-14 23:18:44,304 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:18:44,378 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:18:45,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:18:45,114 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:18:45,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:18:45,359 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:18:45,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:45 WrapperNode [2019-10-14 23:18:45,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:18:45,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:18:45,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:18:45,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:18:45,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:45" (1/1) ... [2019-10-14 23:18:45,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:45" (1/1) ... [2019-10-14 23:18:45,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:45" (1/1) ... [2019-10-14 23:18:45,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:45" (1/1) ... [2019-10-14 23:18:45,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:45" (1/1) ... [2019-10-14 23:18:45,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:45" (1/1) ... [2019-10-14 23:18:45,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:45" (1/1) ... [2019-10-14 23:18:45,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:18:45,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:18:45,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:18:45,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:18:45,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:18:45,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:18:45,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:18:45,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:18:45,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-14 23:18:45,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-14 23:18:45,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-14 23:18:45,617 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-14 23:18:45,617 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-14 23:18:45,617 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-14 23:18:45,618 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-14 23:18:45,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-14 23:18:45,618 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-14 23:18:45,618 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-14 23:18:45,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-14 23:18:45,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-14 23:18:45,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-14 23:18:45,619 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-14 23:18:45,619 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-14 23:18:45,620 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-14 23:18:45,620 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-14 23:18:45,620 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-14 23:18:45,620 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-14 23:18:45,620 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-14 23:18:45,621 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-14 23:18:45,621 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:18:45,621 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-14 23:18:45,621 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-14 23:18:45,622 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-14 23:18:45,622 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:18:45,622 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-14 23:18:45,622 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:18:45,623 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:18:45,623 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:18:45,623 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-14 23:18:45,623 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-14 23:18:45,623 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-14 23:18:45,623 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-14 23:18:45,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-14 23:18:45,624 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-14 23:18:45,624 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-14 23:18:45,624 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-14 23:18:45,624 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-14 23:18:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-14 23:18:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-14 23:18:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-14 23:18:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-14 23:18:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-14 23:18:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-14 23:18:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-14 23:18:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-14 23:18:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-14 23:18:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-14 23:18:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-14 23:18:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-14 23:18:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-14 23:18:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-14 23:18:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-14 23:18:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-14 23:18:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-14 23:18:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-14 23:18:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-14 23:18:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:18:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-14 23:18:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-14 23:18:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-14 23:18:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:18:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:18:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:18:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:18:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:18:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:18:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:18:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:18:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:18:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:18:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:18:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:18:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:18:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:18:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-14 23:18:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-14 23:18:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-14 23:18:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-14 23:18:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-14 23:18:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-14 23:18:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-14 23:18:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-14 23:18:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-14 23:18:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-14 23:18:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-14 23:18:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:18:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-14 23:18:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-14 23:18:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-14 23:18:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-14 23:18:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:18:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-14 23:18:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-14 23:18:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-14 23:18:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-14 23:18:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-14 23:18:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-14 23:18:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-14 23:18:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:18:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-14 23:18:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-14 23:18:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-14 23:18:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:18:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-14 23:18:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-14 23:18:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-14 23:18:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-14 23:18:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-14 23:18:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:18:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-14 23:18:45,638 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:18:45,638 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:18:45,638 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:18:45,638 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:18:45,638 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:18:45,638 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:18:45,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:18:45,639 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-14 23:18:45,639 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-14 23:18:45,639 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-14 23:18:45,639 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:18:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-14 23:18:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-14 23:18:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-14 23:18:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-14 23:18:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-14 23:18:45,640 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-14 23:18:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-14 23:18:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-14 23:18:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-14 23:18:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-14 23:18:45,641 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-14 23:18:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-14 23:18:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-14 23:18:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-14 23:18:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-14 23:18:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-14 23:18:45,642 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-14 23:18:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-14 23:18:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-14 23:18:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-14 23:18:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-14 23:18:45,643 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-14 23:18:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:18:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:18:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:18:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:18:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:18:45,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:18:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:18:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:18:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:18:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:18:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:18:45,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:18:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:18:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:18:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:18:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:18:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:18:45,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:18:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:18:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:18:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:18:47,699 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:18:47,700 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-14 23:18:47,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:47 BoogieIcfgContainer [2019-10-14 23:18:47,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:18:47,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:18:47,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:18:47,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:18:47,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:18:44" (1/3) ... [2019-10-14 23:18:47,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6525c8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:47, skipping insertion in model container [2019-10-14 23:18:47,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:18:45" (2/3) ... [2019-10-14 23:18:47,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6525c8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:18:47, skipping insertion in model container [2019-10-14 23:18:47,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:18:47" (3/3) ... [2019-10-14 23:18:47,709 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product30.cil.c [2019-10-14 23:18:47,719 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:18:47,728 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:18:47,738 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:18:47,770 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:18:47,770 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:18:47,770 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:18:47,770 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:18:47,770 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:18:47,770 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:18:47,771 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:18:47,771 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:18:47,804 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states. [2019-10-14 23:18:47,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-14 23:18:47,822 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:47,823 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:47,825 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:47,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:47,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1657439968, now seen corresponding path program 1 times [2019-10-14 23:18:47,839 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:47,840 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180431195] [2019-10-14 23:18:47,840 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:47,840 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:47,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,415 WARN L191 SmtUtils]: Spent 906.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:18:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:18:49,883 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180431195] [2019-10-14 23:18:49,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046271499] [2019-10-14 23:18:49,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:50,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 2878 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:18:50,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:18:50,507 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:50,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2019-10-14 23:18:50,508 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158265228] [2019-10-14 23:18:50,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:18:50,514 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:50,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:18:50,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:50,530 INFO L87 Difference]: Start difference. First operand 823 states. Second operand 4 states. [2019-10-14 23:18:50,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:50,792 INFO L93 Difference]: Finished difference Result 1347 states and 2176 transitions. [2019-10-14 23:18:50,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:18:50,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-10-14 23:18:50,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:50,820 INFO L225 Difference]: With dead ends: 1347 [2019-10-14 23:18:50,821 INFO L226 Difference]: Without dead ends: 679 [2019-10-14 23:18:50,831 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:18:50,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2019-10-14 23:18:50,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2019-10-14 23:18:50,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-10-14 23:18:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1076 transitions. [2019-10-14 23:18:50,987 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1076 transitions. Word has length 113 [2019-10-14 23:18:50,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:50,988 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 1076 transitions. [2019-10-14 23:18:50,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:18:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1076 transitions. [2019-10-14 23:18:50,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-14 23:18:50,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:50,996 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:51,213 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:51,214 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:51,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:51,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1328074300, now seen corresponding path program 1 times [2019-10-14 23:18:51,215 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:51,216 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174956608] [2019-10-14 23:18:51,216 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:51,217 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:51,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,192 WARN L191 SmtUtils]: Spent 850.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:18:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,356 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-14 23:18:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:18:52,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174956608] [2019-10-14 23:18:52,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335206083] [2019-10-14 23:18:52,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:53,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 2880 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:18:53,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:18:53,277 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:53,277 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2019-10-14 23:18:53,277 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502164010] [2019-10-14 23:18:53,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:18:53,278 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:53,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:18:53,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:18:53,279 INFO L87 Difference]: Start difference. First operand 679 states and 1076 transitions. Second operand 7 states. [2019-10-14 23:18:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:53,457 INFO L93 Difference]: Finished difference Result 1341 states and 2139 transitions. [2019-10-14 23:18:53,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:18:53,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-14 23:18:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:53,466 INFO L225 Difference]: With dead ends: 1341 [2019-10-14 23:18:53,467 INFO L226 Difference]: Without dead ends: 690 [2019-10-14 23:18:53,471 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:18:53,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-14 23:18:53,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 686. [2019-10-14 23:18:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2019-10-14 23:18:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1088 transitions. [2019-10-14 23:18:53,535 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1088 transitions. Word has length 115 [2019-10-14 23:18:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:53,538 INFO L462 AbstractCegarLoop]: Abstraction has 686 states and 1088 transitions. [2019-10-14 23:18:53,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:18:53,538 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1088 transitions. [2019-10-14 23:18:53,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-14 23:18:53,547 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:53,547 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:53,763 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:53,763 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:53,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:53,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1848619236, now seen corresponding path program 1 times [2019-10-14 23:18:53,764 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:53,764 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044326624] [2019-10-14 23:18:53,764 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:53,764 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:53,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,798 WARN L191 SmtUtils]: Spent 911.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:18:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:18:55,123 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044326624] [2019-10-14 23:18:55,124 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232614714] [2019-10-14 23:18:55,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:55,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:18:55,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:18:55,650 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:55,651 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:18:55,651 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027351351] [2019-10-14 23:18:55,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:18:55,652 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:55,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:18:55,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:55,652 INFO L87 Difference]: Start difference. First operand 686 states and 1088 transitions. Second operand 4 states. [2019-10-14 23:18:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:55,753 INFO L93 Difference]: Finished difference Result 1357 states and 2164 transitions. [2019-10-14 23:18:55,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:18:55,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-10-14 23:18:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:55,760 INFO L225 Difference]: With dead ends: 1357 [2019-10-14 23:18:55,760 INFO L226 Difference]: Without dead ends: 697 [2019-10-14 23:18:55,764 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:55,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-10-14 23:18:55,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2019-10-14 23:18:55,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-10-14 23:18:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1096 transitions. [2019-10-14 23:18:55,803 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1096 transitions. Word has length 116 [2019-10-14 23:18:55,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:55,803 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 1096 transitions. [2019-10-14 23:18:55,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:18:55,804 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1096 transitions. [2019-10-14 23:18:55,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-14 23:18:55,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:55,807 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:56,014 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:56,017 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:56,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:56,018 INFO L82 PathProgramCache]: Analyzing trace with hash -154321500, now seen corresponding path program 1 times [2019-10-14 23:18:56,018 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:56,018 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4101038] [2019-10-14 23:18:56,018 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:56,019 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:56,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,908 WARN L191 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:18:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,352 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:18:57,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4101038] [2019-10-14 23:18:57,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599749612] [2019-10-14 23:18:57,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:57,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:18:57,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:18:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:18:58,112 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:18:58,112 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2019-10-14 23:18:58,113 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814599995] [2019-10-14 23:18:58,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:18:58,114 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:58,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:18:58,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:18:58,114 INFO L87 Difference]: Start difference. First operand 695 states and 1096 transitions. Second operand 7 states. [2019-10-14 23:18:58,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:58,260 INFO L93 Difference]: Finished difference Result 1358 states and 2155 transitions. [2019-10-14 23:18:58,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:18:58,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-10-14 23:18:58,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:58,268 INFO L225 Difference]: With dead ends: 1358 [2019-10-14 23:18:58,268 INFO L226 Difference]: Without dead ends: 704 [2019-10-14 23:18:58,272 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:18:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2019-10-14 23:18:58,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 695. [2019-10-14 23:18:58,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-10-14 23:18:58,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1096 transitions. [2019-10-14 23:18:58,306 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1096 transitions. Word has length 116 [2019-10-14 23:18:58,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:58,307 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 1096 transitions. [2019-10-14 23:18:58,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:18:58,307 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1096 transitions. [2019-10-14 23:18:58,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-14 23:18:58,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:58,310 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:18:58,522 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:18:58,523 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:58,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:58,523 INFO L82 PathProgramCache]: Analyzing trace with hash -698243827, now seen corresponding path program 1 times [2019-10-14 23:18:58,523 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:58,524 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017047800] [2019-10-14 23:18:58,524 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:58,524 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:58,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,415 WARN L191 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:18:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:18:59,697 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017047800] [2019-10-14 23:18:59,697 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918416020] [2019-10-14 23:18:59,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:00,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 2883 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:00,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:19:00,290 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:00,290 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:19:00,290 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741235277] [2019-10-14 23:19:00,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:00,291 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:00,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:00,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:00,292 INFO L87 Difference]: Start difference. First operand 695 states and 1096 transitions. Second operand 4 states. [2019-10-14 23:19:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:00,549 INFO L93 Difference]: Finished difference Result 1391 states and 2225 transitions. [2019-10-14 23:19:00,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:00,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-14 23:19:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:00,556 INFO L225 Difference]: With dead ends: 1391 [2019-10-14 23:19:00,556 INFO L226 Difference]: Without dead ends: 737 [2019-10-14 23:19:00,560 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:00,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2019-10-14 23:19:00,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 734. [2019-10-14 23:19:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2019-10-14 23:19:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1169 transitions. [2019-10-14 23:19:00,586 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1169 transitions. Word has length 119 [2019-10-14 23:19:00,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:00,587 INFO L462 AbstractCegarLoop]: Abstraction has 734 states and 1169 transitions. [2019-10-14 23:19:00,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:00,587 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1169 transitions. [2019-10-14 23:19:00,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-14 23:19:00,590 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:00,590 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:00,805 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:00,806 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:00,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:00,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1098316311, now seen corresponding path program 1 times [2019-10-14 23:19:00,807 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:00,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631967423] [2019-10-14 23:19:00,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:00,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:00,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,687 WARN L191 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:19:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,831 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-14 23:19:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:01,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631967423] [2019-10-14 23:19:01,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540379920] [2019-10-14 23:19:01,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:02,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:02,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:19:02,628 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:02,629 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:19:02,629 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120395060] [2019-10-14 23:19:02,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:02,630 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:02,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:02,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:02,630 INFO L87 Difference]: Start difference. First operand 734 states and 1169 transitions. Second operand 4 states. [2019-10-14 23:19:02,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:02,718 INFO L93 Difference]: Finished difference Result 1415 states and 2271 transitions. [2019-10-14 23:19:02,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:02,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-14 23:19:02,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:02,725 INFO L225 Difference]: With dead ends: 1415 [2019-10-14 23:19:02,725 INFO L226 Difference]: Without dead ends: 734 [2019-10-14 23:19:02,729 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:02,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2019-10-14 23:19:02,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2019-10-14 23:19:02,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2019-10-14 23:19:02,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1164 transitions. [2019-10-14 23:19:02,754 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1164 transitions. Word has length 121 [2019-10-14 23:19:02,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:02,755 INFO L462 AbstractCegarLoop]: Abstraction has 734 states and 1164 transitions. [2019-10-14 23:19:02,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:02,755 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1164 transitions. [2019-10-14 23:19:02,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-14 23:19:02,757 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:02,757 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:02,972 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:02,972 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:02,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:02,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1266209205, now seen corresponding path program 1 times [2019-10-14 23:19:02,973 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:02,973 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453619560] [2019-10-14 23:19:02,973 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:02,973 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:02,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,036 WARN L191 SmtUtils]: Spent 957.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:19:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:04,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453619560] [2019-10-14 23:19:04,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447877487] [2019-10-14 23:19:04,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:04,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:19:04,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:19:04,881 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:04,882 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-14 23:19:04,882 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578912806] [2019-10-14 23:19:04,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:19:04,887 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:04,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:19:04,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:19:04,889 INFO L87 Difference]: Start difference. First operand 734 states and 1164 transitions. Second operand 7 states. [2019-10-14 23:19:05,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:05,035 INFO L93 Difference]: Finished difference Result 1383 states and 2203 transitions. [2019-10-14 23:19:05,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:19:05,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2019-10-14 23:19:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:05,042 INFO L225 Difference]: With dead ends: 1383 [2019-10-14 23:19:05,043 INFO L226 Difference]: Without dead ends: 748 [2019-10-14 23:19:05,046 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:19:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-10-14 23:19:05,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 741. [2019-10-14 23:19:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2019-10-14 23:19:05,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1175 transitions. [2019-10-14 23:19:05,084 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1175 transitions. Word has length 122 [2019-10-14 23:19:05,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:05,084 INFO L462 AbstractCegarLoop]: Abstraction has 741 states and 1175 transitions. [2019-10-14 23:19:05,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:19:05,084 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1175 transitions. [2019-10-14 23:19:05,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-14 23:19:05,087 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:05,087 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:05,294 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:05,295 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:05,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:05,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1449069541, now seen corresponding path program 1 times [2019-10-14 23:19:05,295 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:05,295 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127932376] [2019-10-14 23:19:05,295 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:05,296 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:05,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,170 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:19:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:19:06,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127932376] [2019-10-14 23:19:06,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986445285] [2019-10-14 23:19:06,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:06,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:19:06,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:07,026 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:19:07,027 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:07,027 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2019-10-14 23:19:07,027 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349196884] [2019-10-14 23:19:07,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:19:07,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:07,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:19:07,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:19:07,032 INFO L87 Difference]: Start difference. First operand 741 states and 1175 transitions. Second operand 7 states. [2019-10-14 23:19:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:07,204 INFO L93 Difference]: Finished difference Result 1383 states and 2202 transitions. [2019-10-14 23:19:07,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:19:07,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2019-10-14 23:19:07,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:07,213 INFO L225 Difference]: With dead ends: 1383 [2019-10-14 23:19:07,213 INFO L226 Difference]: Without dead ends: 748 [2019-10-14 23:19:07,218 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:19:07,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-10-14 23:19:07,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 738. [2019-10-14 23:19:07,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-10-14 23:19:07,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1169 transitions. [2019-10-14 23:19:07,269 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1169 transitions. Word has length 123 [2019-10-14 23:19:07,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:07,270 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1169 transitions. [2019-10-14 23:19:07,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:19:07,270 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1169 transitions. [2019-10-14 23:19:07,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-14 23:19:07,274 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:07,274 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:07,493 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:07,494 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:07,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:07,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1278976275, now seen corresponding path program 1 times [2019-10-14 23:19:07,495 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:07,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447252689] [2019-10-14 23:19:07,496 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:07,496 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:07,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,510 WARN L191 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:19:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:08,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447252689] [2019-10-14 23:19:08,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163406960] [2019-10-14 23:19:08,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:09,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:09,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:19:09,323 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:09,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:19:09,324 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171946160] [2019-10-14 23:19:09,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:09,325 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:09,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:09,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:09,325 INFO L87 Difference]: Start difference. First operand 738 states and 1169 transitions. Second operand 4 states. [2019-10-14 23:19:09,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:09,389 INFO L93 Difference]: Finished difference Result 1419 states and 2271 transitions. [2019-10-14 23:19:09,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:19:09,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-14 23:19:09,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:09,395 INFO L225 Difference]: With dead ends: 1419 [2019-10-14 23:19:09,395 INFO L226 Difference]: Without dead ends: 738 [2019-10-14 23:19:09,399 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:09,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2019-10-14 23:19:09,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2019-10-14 23:19:09,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2019-10-14 23:19:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1166 transitions. [2019-10-14 23:19:09,421 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1166 transitions. Word has length 123 [2019-10-14 23:19:09,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:09,422 INFO L462 AbstractCegarLoop]: Abstraction has 738 states and 1166 transitions. [2019-10-14 23:19:09,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:09,422 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1166 transitions. [2019-10-14 23:19:09,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-14 23:19:09,424 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:09,425 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:09,637 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:09,638 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:09,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:09,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1059446297, now seen corresponding path program 1 times [2019-10-14 23:19:09,638 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:09,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623278970] [2019-10-14 23:19:09,638 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:09,639 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:09,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,496 WARN L191 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:19:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:19:10,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623278970] [2019-10-14 23:19:10,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34794074] [2019-10-14 23:19:10,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:11,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:19:11,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:19:11,303 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:11,303 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-10-14 23:19:11,303 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137882674] [2019-10-14 23:19:11,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:11,304 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:11,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:11,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:11,304 INFO L87 Difference]: Start difference. First operand 738 states and 1166 transitions. Second operand 4 states. [2019-10-14 23:19:11,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:11,514 INFO L93 Difference]: Finished difference Result 1415 states and 2265 transitions. [2019-10-14 23:19:11,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:11,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-14 23:19:11,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:11,520 INFO L225 Difference]: With dead ends: 1415 [2019-10-14 23:19:11,520 INFO L226 Difference]: Without dead ends: 780 [2019-10-14 23:19:11,524 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:11,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2019-10-14 23:19:11,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2019-10-14 23:19:11,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2019-10-14 23:19:11,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1243 transitions. [2019-10-14 23:19:11,549 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1243 transitions. Word has length 124 [2019-10-14 23:19:11,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:11,550 INFO L462 AbstractCegarLoop]: Abstraction has 780 states and 1243 transitions. [2019-10-14 23:19:11,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:11,550 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1243 transitions. [2019-10-14 23:19:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-14 23:19:11,552 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:11,553 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:11,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:11,760 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:11,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:11,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1832817376, now seen corresponding path program 1 times [2019-10-14 23:19:11,760 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:11,761 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375625919] [2019-10-14 23:19:11,761 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:11,761 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:11,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,540 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:19:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:12,860 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375625919] [2019-10-14 23:19:12,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052584881] [2019-10-14 23:19:12,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:13,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-14 23:19:13,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-14 23:19:13,455 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:13,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-10-14 23:19:13,456 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287028028] [2019-10-14 23:19:13,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:19:13,458 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:13,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:19:13,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:19:13,459 INFO L87 Difference]: Start difference. First operand 780 states and 1243 transitions. Second operand 3 states. [2019-10-14 23:19:13,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:13,621 INFO L93 Difference]: Finished difference Result 2024 states and 3262 transitions. [2019-10-14 23:19:13,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:19:13,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-10-14 23:19:13,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:13,630 INFO L225 Difference]: With dead ends: 2024 [2019-10-14 23:19:13,631 INFO L226 Difference]: Without dead ends: 1393 [2019-10-14 23:19:13,635 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:19:13,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2019-10-14 23:19:13,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1320. [2019-10-14 23:19:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2019-10-14 23:19:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2128 transitions. [2019-10-14 23:19:13,715 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2128 transitions. Word has length 126 [2019-10-14 23:19:13,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:13,717 INFO L462 AbstractCegarLoop]: Abstraction has 1320 states and 2128 transitions. [2019-10-14 23:19:13,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:19:13,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2128 transitions. [2019-10-14 23:19:13,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-14 23:19:13,726 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:13,727 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:13,942 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:13,942 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:13,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:13,942 INFO L82 PathProgramCache]: Analyzing trace with hash -918204397, now seen corresponding path program 1 times [2019-10-14 23:19:13,943 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:13,943 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781183393] [2019-10-14 23:19:13,943 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:13,943 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:13,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,763 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:19:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,222 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-10-14 23:19:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:19:15,442 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781183393] [2019-10-14 23:19:15,442 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676221691] [2019-10-14 23:19:15,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:15,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 3254 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:19:15,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:19:15,971 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:15,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 10 [2019-10-14 23:19:15,971 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622135760] [2019-10-14 23:19:15,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:19:15,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:15,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:19:15,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:19:15,973 INFO L87 Difference]: Start difference. First operand 1320 states and 2128 transitions. Second operand 4 states. [2019-10-14 23:19:16,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:16,053 INFO L93 Difference]: Finished difference Result 2599 states and 4214 transitions. [2019-10-14 23:19:16,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:19:16,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2019-10-14 23:19:16,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:16,063 INFO L225 Difference]: With dead ends: 2599 [2019-10-14 23:19:16,063 INFO L226 Difference]: Without dead ends: 1297 [2019-10-14 23:19:16,070 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:19:16,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2019-10-14 23:19:16,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1297. [2019-10-14 23:19:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1297 states. [2019-10-14 23:19:16,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 2084 transitions. [2019-10-14 23:19:16,115 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 2084 transitions. Word has length 176 [2019-10-14 23:19:16,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:16,115 INFO L462 AbstractCegarLoop]: Abstraction has 1297 states and 2084 transitions. [2019-10-14 23:19:16,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:19:16,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 2084 transitions. [2019-10-14 23:19:16,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-14 23:19:16,120 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:16,121 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:16,336 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:16,337 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:16,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:16,337 INFO L82 PathProgramCache]: Analyzing trace with hash 965560856, now seen corresponding path program 1 times [2019-10-14 23:19:16,337 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:16,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214661599] [2019-10-14 23:19:16,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:16,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:16,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,158 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-10-14 23:19:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,622 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2019-10-14 23:19:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:19:17,729 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214661599] [2019-10-14 23:19:17,730 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365459703] [2019-10-14 23:19:17,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:19:18,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 3253 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:19:18,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:19:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-14 23:19:18,411 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:19:18,411 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2019-10-14 23:19:18,411 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363090385] [2019-10-14 23:19:18,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:19:18,412 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:19:18,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:19:18,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:19:18,413 INFO L87 Difference]: Start difference. First operand 1297 states and 2084 transitions. Second operand 7 states. [2019-10-14 23:19:18,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:19:18,544 INFO L93 Difference]: Finished difference Result 2553 states and 4109 transitions. [2019-10-14 23:19:18,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:19:18,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2019-10-14 23:19:18,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:19:18,553 INFO L225 Difference]: With dead ends: 2553 [2019-10-14 23:19:18,553 INFO L226 Difference]: Without dead ends: 1304 [2019-10-14 23:19:18,560 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:19:18,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2019-10-14 23:19:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1291. [2019-10-14 23:19:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2019-10-14 23:19:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 2070 transitions. [2019-10-14 23:19:18,606 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 2070 transitions. Word has length 174 [2019-10-14 23:19:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:19:18,606 INFO L462 AbstractCegarLoop]: Abstraction has 1291 states and 2070 transitions. [2019-10-14 23:19:18,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:19:18,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 2070 transitions. [2019-10-14 23:19:18,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-14 23:19:18,612 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:19:18,612 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:19:18,827 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:19:18,828 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:19:18,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:19:18,829 INFO L82 PathProgramCache]: Analyzing trace with hash 455100135, now seen corresponding path program 1 times [2019-10-14 23:19:18,829 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:19:18,829 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088801207] [2019-10-14 23:19:18,829 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:18,830 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:19:18,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:19:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat